Insulator for circuit-breakers.



L.L.ELDBN.

INSULATOR FOR CIRCUIT BREAKERS.

APPLICATION FILED DEC. 2, 1903.

907, 108. Patented Dec. 15, 19%.

' iineoa a:

barren Parana onrron EONARD L. ELDER. ()F UOHCHESTER, MASSACHUSETTS,ASSIGXOR TO SEARS B. CONDIT, JR,

Ob BOSTON, MASSACHUSETTS.

INSU. ATOR FOR CIRCUlT-BREAKERS.

To all whom it may concern:

citizen of the United States, and residing in Dorchester, in the countyof Suffolk and State of Massachusetts, have invented an improvement ininsulators for Circuit- Breakers, of which the following description, inconnection with the accompanying drawings, is a specification, likeletters on the drawings representing like parts.

The purpose of my invention is to provide an improved insulator forcircuit breakers, switches and the like which shall prevent destructivearcing, and to this end I have provided, in connection with a supportfor lined and movable electrodes, an oil well or pen or receptacle forinclosing the electrodes and adapted to be raised and lowered withrelationthereto, certain of the features of my invention being dividedout of my application, Ser. No. 65,241,1ileddune 20, 1901, now PatentNo. 756,344, dated April 5, 1904.

In its simpler form my invention comprises in its embodiment, a circuitbreaker or the like depending from a bracket or other support carryingcooperating makeand-break contacts, combined with a detachable oilinsulator adapted to be placed in position for immersing said contactswithout disturbance of the mechanism.

Further details of construction and advantages thereol willbe pointedout in the course of the following description reference,

.being had to the accompanying drawings.

in the drawings, Figure 1 is a view showing the insulating receptacle incentral longitudinal section, and also showing in side elevation oneform of circuit breaker, the subject matter of this ligure being dividedout from my application tier. ho. 65,2l1, filed June 21), 1901. Fig. 2shows in end elevation details of the lower portion oi the switch. Fig.3 is a sectional detail looking at Fig. 1 toward the right, showing thedetachable supporting ears. F g. t is a fragmentary detail showing thefastening means for the oilwell.

At the rear side of the switch board or other support A, as shown inFig. l, is hung a pan a which may be composed of any suitable materialbut is preferably made of metal a and provided with a wooden or othernon-conductive lining (L The pan is Specification of Letters Patent.

Qriginal application filed June20, 1901, Serial No. 65,241.

. Serial No.

preferably supported at one end on bolts a Patented Dec. 15, 1908..

Divided and this application filed December 2, 1903. 183.458.

I by means of cars a, 3, and at its opp0- Be it known that I, LEONARD L.ELDEN, a

site end by a hail a? hung on a hook a secured to the rear side of abracket a whose head a is bolted to the switch board. The bracket asupports the rear portion of the circuit breaker, being provided forthis urpose, as shown in Fig. 1, with vertica insulating posts a whichsupport at their lower ends a base block a of wood, ebonite, or otherproper insulating material. The block a carries on its upper sideopposite pairs of contacts or electrodes a, three pairs thereof beingherein indicated, adapted to receive the wires from a three-phasegenerator or the wires of any other three circuits which may beinterrelated in such a manner that it is desirable to make and break thesame simultaneously. The wiring, etc, are more fully shown and set forthin my Patent No. 756,344 dated April 5, 190%, before mentioned. Eachcontact a is provided with a post a having a socket a" at its upper endfor receiving said wires preferably above and outside of the insulatingpan or tank a.

As the details of this circuit breaker are not herein claimed, but formthe subject matter of another co-pending application, it will besufficient to mention briefly that it carries corresponding sets ofcontact makers or electrodes a secured in proper position on aninsulating bar a adapted to cooperate with the contacts a, the bar abeing guided in vertical movement by the posts a and operated by a link0, secured to said bar a at e and secured at a to the free end of a bellcrank a, pivoted at e in ears a? extending rigidly from the bracket aThe opposite end of the bell crank carries a roll a operating in a slotat of a plunger reciprocating in the bracket a and normally pressedinwardly by a powerful spring a, the plunger being adapted to beoperated by a handle or any other suitable actuating device not shown.It will be obvious that this construction ofinsulator and breakerpermits the indefinite extension of both to correspond to any number ofcircuits which it may be desired to break simultaneously, simply byextending the bar a and the pan a and other parts'correspondingly.

in situations where the regular switch board cannot be put in position,it is advantageous to mount the panand actuating apparatus on the sameside with the hand lever or other operating mechanism, slight mechanicalchanges being .made to permit the same; and in general it will beunderstood that I do not restrict myself to the form and arrangement ofinsulator herein described, as various modifications and otherembodiments may be resorted to without departing from the spirit andscope of my invention as defined in the appended claims, I-lavingdescribed my invention, what I claim as new and desire to secure byLetters Patent, is v 1. A circuit breaker, having separable cooperativecontacts, and vertically movable means for carrying one of them,combined with a horizontally movable actuating device, horizontalmovement of the latter moving the former and said contacts straight upand down, and a support for said mechanism at theupper portion thereof,said mechanism depending therefrom, leaving a freespace about thecontacts and adjacent parts,

and a suspended and vertically removable inclosin receptacle for oil.

2. An oil-switch, com )rising an overhanging support andfixed ancmovable electrodes dc ,ending therefrom said su ort havin fasteningmeans for securing it permanently to the switch board, and an oilinsulator in.

closing said electrodes and provided at its upper portion withsuspending means for suspending said insulator in an immersing positionabout said depending electrodes, beneath said fixed support. I

3. An oil-switch, comprising a fixed horizontal support, fixed andmovable electrodes carried by said so port and depending therefrom, andan oi well vertically movable about said electrodes without disturbingthem, said oil well being provided with means for detachably engagingsaid fixed sup ort, and when so engaged, maintaining sai electrodessubmerged in oil .in all the operative movements of said electrodes.

4-. An oil-switch, comprising a. fixed support provided with means forsecuring the same to the switch board, fixed and movable,

With suspending means for removably suspending said oil well insubmerging position with relation to said electrodes.

5. An'oil-switch, comprising a horizontally-extending supporting means,fixed and movable electrodes depending therefrom, and an oil wellremovably suspended beneath said-support, in osition to submerge saidelectrodes in all t eir operative movements, said oil well beingremovable without disturbing said electrodes.

6. An oil-switch, comprising ahorizontallyextending support providedwith means for securing the same to the back of the switch board, fixedand movable electrodes depending from the rear end of said support,operating means therefor extending from said support to the oppositeside of the switch board, and an oil welldetachably suspended by saidsupport, in submerging relation with said electrodes. 7. An oil-switch,comprising depending fixed and movable electrodes, operating meanstherefor, an'oil pan having opposite ears containing elongatedperforations, cooperating headed supporting means for de tachablyreceiving said ears, and supporting means for detachably retaining theopposite upper side of the oil pan.

8. An oil-switch, comprising depending fixed and movable electrodes, 0crating means therefor, an oil pan providec with a bail, an overhangingbracket having at its rear end a su porting hook adapted to receive saidbe e, and means for supporting the opposite side of said pan. v

In witness whereof, I have signed my name to this specification, in thepresence of two subscribing witnesses.

LEONARD L. ELDEN.

,Viitnesses 'SEARs B. CONDIT, Jr., GEO. H. MAXWELL.

